import React, { useState, useEffect, useRef, useContext } from 'react'
import { Button, Table, Modal, Form, Input } from 'antd'
import { DeleteOutlined, ExclamationCircleOutlined } from '@ant-design/icons'
import { newCategories, updatenewCategorie, delnewCategorie } from '@api'

const { confirm } = Modal
export default function NewsCategory() {
    /*--------------------------------------state--------------------------------------------------------------------------*/
    /*--------------------------------------state--------------------------------------------------------------------------*/
    /*--------------------------------------state--------------------------------------------------------------------------*/
    /*--------------------------------------state--------------------------------------------------------------------------*/
    const columns = [
        {
            title: 'ID',
            dataIndex: 'id',
            render: (id) => {
                return <b>{id}</b>
            }
        },
        {
            title: '栏目名称',
            dataIndex: 'title',
            // 点击可修改内容 配置
            onCell: (record) => ({
                record,
                editable: true,
                dataIndex: 'title',
                title: '栏目名称',
                handleSave: handleSave,
            }),

        },
        {
            title: "操作",
            render: (item) => {
                return <div>
                    <Button danger shape="circle" icon={<DeleteOutlined />} onClick={() => confirmMethod(item)} />
                </div>
            }
        }
    ];
    const [dataSource, setdataSource] = useState([])
    /*--------------------------------------useEffect--------------------------------------------------------------------------*/
    /*--------------------------------------useEffect--------------------------------------------------------------------------*/
    /*--------------------------------------useEffect--------------------------------------------------------------------------*/
    /*--------------------------------------useEffect--------------------------------------------------------------------------*/
    useEffect(() => {
        get_news_categories()
    }, [])
    /*--------------------------------------方法--------------------------------------------------------------------------*/
    /*--------------------------------------方法--------------------------------------------------------------------------*/
    /*--------------------------------------方法--------------------------------------------------------------------------*/
    /*--------------------------------------方法--------------------------------------------------------------------------*/
    // 获取分类
    const get_news_categories = () => {
        newCategories().then((res) => {
            setdataSource(res.data)
        })
    }
    // 修改
    const handleSave = (record) => {
        setdataSource(dataSource.map(item => {
            if (item.id === record.id) {
                return {
                    id: item.id,
                    title: record.title,
                    value: record.title
                }
            }
            return item
        }))
        updatenewCategorie({
            id: record.id,
            title: record.title,
            value: record.title
        })
    }
    //删除
    const confirmMethod = (item) => {
        confirm({
            title: '你确定要删除?',
            okText: '确认',
            cancelText: '取消',
            icon: <ExclamationCircleOutlined />,
            onOk() {
                setdataSource(dataSource.filter(data => data.id !== item.id))
                delnewCategorie({
                    id: item.id
                })
            }
        });
    }

    // 点击可修改内容 配置  开始
    const EditableContext = React.createContext(null);
    const EditableRow = ({ index, ...props }) => {
        const [form] = Form.useForm();
        return (
            <Form form={form} component={false}>
                <EditableContext.Provider value={form}>
                    <tr {...props} />
                </EditableContext.Provider>
            </Form>
        );
    };

    const EditableCell = ({
        title,
        editable,
        children,
        dataIndex,
        record,
        handleSave,
        ...restProps
    }) => {
        const [editing, setEditing] = useState(false);
        const inputRef = useRef(null);
        const form = useContext(EditableContext);
        useEffect(() => {
            if (editing) {
                inputRef.current.focus();
            }
        }, [editing]);

        const toggleEdit = () => {
            setEditing(!editing);
            form.setFieldsValue({
                [dataIndex]: record[dataIndex],
            });
        };

        const save = async () => {
            try {
                const values = await form.validateFields();
                toggleEdit();
                // 点击离开后的方法
                handleSave({ ...record, ...values });
            } catch (errInfo) {
                console.log('Save failed:', errInfo);
            }
        };

        let childNode = children;

        if (editable) {
            childNode = editing ? (
                <Form.Item style={{ margin: 0, }} name={dataIndex} rules={[{ required: true, message: `${title} is required.`, },]} >
                    <Input ref={inputRef} onPressEnter={save} onBlur={save} />
                </Form.Item>
            ) : (
                <div className="editable-cell-value-wrap" style={{ paddingRight: 24, }} onClick={toggleEdit} >
                    {children}
                </div>
            );
        }
        return <td {...restProps}>{childNode}</td>;
    };
    // 点击可修改内容 配置  结束

    /*--------------------------------------jsx--------------------------------------------------------------------------*/
    /*--------------------------------------jsx--------------------------------------------------------------------------*/
    /*--------------------------------------jsx--------------------------------------------------------------------------*/
    /*--------------------------------------jsx--------------------------------------------------------------------------*/
    return (
        <div>
            <Table dataSource={dataSource} columns={columns} pagination={{ pageSize: 5 }} rowKey={item => item.id} components={{ body: { row: EditableRow, cell: EditableCell, } }} />
        </div>
    )
}
